Nikon Camera D810 Users Manual

87
Focus
This section describes the focus options available when 
photographs are framed in the viewfinder.
 Focus can be 
adjusted automatically (see below) or manually ( 0100).
 The 
user can also select the focus point for automatic or manual 
focus ( 094) or use focus lock to focus to recompose 
photographs after focusing ( 096).
To use autofocus, rotate the focus-mode 
selector to  AF.
Autofocus Mode
The following autofocus modes can be selected during 
viewfinder photography:
Autofocus...

88
Autofocus mode can be 
selected by pressing the 
AF-mode button and rotating 
the main command dial until 
the desired setting is displayed 
in the viewfinder and control 
panel.
Control panel Viewfinder
AThe B  Button
For the purpose of focusing the camera, 
pressing the  B button has the same 
effect as pressing the shutter-release 
button halfway.
APredictive Focus Tracking
In  AF-C  mode, the camera will initiate predictive focus tracking if the 
subject moves toward or away from the camera while...

89
ASee Also
For information on using focus priority in continuous-servo AF, see 
Custom Setting a1 ( AF-C priority selection , 0 306).
 For information 
on using release priority in single-servo AF, see Custom Setting a2 
( AF-S priority selection , 0 307).
 For information on preventing the 
camera from focusing when the  shutter-release button is pressed 
halfway, see Custom Setting a4 ( AF activation, 0 308).
 See Custom 
Setting a12 ( Autofocus mode restrictions , 0 314) for information on 
limiting...

90
AF-Area Mode
Choose how the focus point is selected during viewfinder 
photography.
•Single-point AF : Select the focus point as described on page 94; 
the camera will focus on the subject in the selected focus point 
only.
 Use with stationary subjects.
• Dynamic-area AF : Select the focus point as described on page 94.
 
In AF-C  focus mode, the camera will focus based on information 
from surrounding focus points if the subject briefly leaves the 
selected point.
 The number of focus points varies...

91
•Group-area AF : The camera focuses using a group of focus points 
selected by the user, reducing the risk of the camera focusing 
on the background instead of on the main subject.
 Choose for 
subjects that are difficult to  photograph using a single focus 
point.
 If faces are detected in  AF-S focus mode, the camera will 
give priority to portrait subjects.
• Auto-area AF : The camera automatically 
detects the subject and selects the 
focus point; if a face is detected, the 
camera will give...

92
A3D-tracking
When the shutter-release button is pressed halfway, the colors in the 
area surrounding the focus point are stored in the camera.
 Consequently 3D-tracking may not produce the desired results with 
subjects that are similar in color to the background or that occupy a 
very small area of the frame.
AAF-Area Mode
AF-area mode is shown in the control panel and viewfinder.
AF-area modeControl panelViewfinder
Single-point AF
9-point dynamic-area AF*
21-point dynamic-area AF*
51-point...

93
ASee Also
For information on adjusting how long the camera waits before 
refocusing when an object moves in front of the camera, see Custom 
Setting a3 ( Focus tracking with lock-on , 0 308).
 See Custom Setting 
a5 ( Focus point illumination , 0 309) for information on choosing 
how the focus point is displayed in dynamic-area and group-area AF, 
a11 ( Limit AF-area mode selection , 0 314) for information on 
limiting AF-area mode selection, and f9 ( Customize command 
dials )> Change main/sub  (0...

94
Focus Point Selection
The camera offers a choice of 51 focus points that can be used to 
compose photographs with the main subject positioned almost 
anywhere in the frame.
 Follow the steps below to choose the 
focus point (in group-area AF,  you can follow these steps to 
choose a group of focus points).
1Rotate the focus selector lock to  ●.
This allows the multi selector to be 
used to select the focus point.
2Select the focus point.
Use the multi selector to select the 
focus point in the...

95
The focus selector lock can be rotated 
to the locked (L) position following 
selection to prevent the selected 
focus point from changing when the 
multi selector is pressed.
AAuto-area AF
The focus point for auto-area AF is selected automatically; manual 
focus-point selection is not available.
ASee Also
For information on choosing when and how the focus point is 
illuminated, see Custom Setting a5 ( Focus point illumination, 0 309) 
and a6 ( AF point illumination , 0 310).
 For information on...

96
Focus Lock
Focus lock can be used to change the composition after 
focusing, making it possible to focus on a subject that will not be 
in a focus point in the final composition.
 If the camera is unable 
to focus using autofocus ( 087), focus lock can also be used to 
recompose the photograph after focusing on another object at 
the same distance as your original subject.
 Focus lock is most 
effective when an option other than auto-area AF is selected for 
AF-area mode ( 090).
1Focus.
Position the...